NCT06785831

Brief Summary

The effects of different foods to normal bowel function in adult population will be investigated. A randomised controlled intervention trial will be conducted on about 120 (30 per group) adult (18-70 years) subjects with functional constipation and irritable bowel syndrome with constipation according to the IV. Rome criteria. At least one week before inclusion in the study, patients will stop taking laxatives and other anti-constipation medications. Subjects will be randomly selected to consume one of the test foods (fresh apples, dried apples, sauerkraut) or the active control (psyllium) in the equivalent amount of 3 g of fiber per day for 4 weeks. Subjects will be asked not to change their lifestyle habits, such as diet and physical activity level, and not to take oral laxatives during the period of participation in the study.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
120

participants targeted

Target at P50-P75 for not_applicable

Timeline
5mo left

Started Jan 2025

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress76%
Jan 2025Sep 2026

First Submitted

Initial submission to the registry

December 13, 2024

Completed
1 month until next milestone

Study Start

First participant enrolled

January 20, 2025

Completed
1 day until next milestone

First Posted

Study publicly available on registry

January 21, 2025

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2025

Completed
1.1 years until next milestone

Study Completion

Last participant's last visit for all outcomes

September 30, 2026

Expected
Last Updated

January 21, 2025

Status Verified

January 1, 2025

Enrollment Period

7 months

First QC Date

December 13, 2024

Last Update Submit

January 14, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in frequency of complete spontaneous bowel movements (CSBM) / week

    Daily measurement of number of complete spontaneous bowel movements

    fourth week vs pre-intervention

Other Outcomes (3)

  • Change in constipation symptom score (CSC)

    fourth week vs pre-intervention

  • Change in stool consistency using Bristol stool form (BSF) scale

    fourth week vs pre-intervention

  • Change in blood lipids

    in week after intervention vs pre-intervention

Study Arms (4)

Psyllium

ACTIVE COMPARATOR

Psyllium containing 3 g dietary fibre, daily, for 4 weeks

Other: Psyllium

Sauerkraut

EXPERIMENTAL

Sauerkraut containing 3 g dietary fibre, daily, for 4 weeks

Other: Sauerkraut

Fresh apples

EXPERIMENTAL

Fresh apples containing 3 g dietary fibre, daily, for 4 weeks

Other: Fresh apples

Dried apples

EXPERIMENTAL

Dried apples containing 3 g dietary fibre, daily, for 4 weeks

Other: Dried apples

Interventions

Participants will once daily consume predefined amount of psyllium, corresponding to 3 g of dietary fibre, for 28 days.

Psyllium

Participants will once daily consume predefined amount of sauerkraut, corresponding to 3 g of dietary fibre, for 28 days.

Sauerkraut

Participants will once daily consume predefined amount of fresh apples, corresponding to 3 g of dietary fibre, for 28 days.

Fresh apples

Participants will once daily consume predefined amount of dried apples, corresponding to 3 g of dietary fibre, for 28 days.

Dried apples

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Signed informed consent of the participant to participate in the study
  • Age between 18 and 70 years
  • Functional constipation or irritable bowel syndrome
  • Expressed willingness to eat the investigated food daily (sauerkraut, apples, dried apples or psyllium; period of four weeks)

You may not qualify if:

  • Known allergy to the investigated foods (fresh apples, dried apples, sauerkraut or psyllium)
  • Pregnancy or breastfeeding
  • Previous gastrointestinal surgery with the exception of cholecystectomy and appendectomy
  • Other gastrointestinal diseases (chronic inflammatory bowel disease, celiac disease, gastroparesis, etc.)
  • Serious chronic diseases
  • Regular use of laxatives or inability to stop using laxatives for the duration of the study
  • Concurrent participation in another study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

UKC Ljubljana

Ljubljana, 1000, Slovenia

Location

MeSH Terms

Conditions

Irritable Bowel Syndrome

Interventions

Psyllium

Condition Hierarchy (Ancestors)

Colonic Diseases, FunctionalColonic DiseasesIntestinal DiseasesGastrointestinal DiseasesDigestive System Diseases

Intervention Hierarchy (Ancestors)

Plant ExtractsPlant PreparationsBiological ProductsComplex Mixtures

Study Officials

  • Anita Kušar, PhD

    Researcher

    STUDY DIRECTOR

Central Study Contacts

Anita Kušar, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Masking Details
Intervention include consumption of specific foods, therefore masking to participant and investigatior is not possible. Collected data will be masked for accessor of outcomes.
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 13, 2024

First Posted

January 21, 2025

Study Start

January 20, 2025

Primary Completion

September 1, 2025

Study Completion (Estimated)

September 30, 2026

Last Updated

January 21, 2025

Record last verified: 2025-01

Locations